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Table 2 Zones of inhibitions of plant extracts against bacterial strains at different concentrations

From: Phytochemical analysis and versatile in vitro evaluation of antimicrobial, cytotoxic and enzyme inhibition potential of different extracts of traditionally used Aquilegia pubiflora Wall. Ex Royle

Bacterial Strains

Sample

Concentration

Ampicillin

5 mg/mL

4 mg/mL

2 mg/mL

1 mg/mL

0.5 mg/mL

Zone of inhibition in (mm)

Bacillus subtilis

APDW

15.4 ± 0.67

10.1 ± 0.20*

8.2 ± 0.31**

8.1 ± 0.27**

6.4 ± 0.19***

5.7 ± 0.19***

APM

17.1 ± 0.74

12.1 ± 0.38*

11.7 ± 0.34*

10.2 ± 0.29**

7.3 ± 0.24***

6.2 ± 0.17***

APE

15.8 ± 0.72

12.2 ± 0.39*

9.3 ± 0.32*

6.9 ± 0.22**

6.1 ± 0.18**

4.7 ± 0.21***

APEA

15.5 ± 0.69

10.7 ± 0.43*

9.7 ± 0.26*

6.3 ± 0.21**

5.7 ± 0.19***

5.2 ± 0.31***

Staphylococcus epidermidis

APDW

16.4 ± 0.59

10.3 ± 0.27*

10.1 ± 0.39*

7.3 ± 0.19**

6.2 ± 0.25**

4.4 ± 0.17***

APM

17.3 ± 0.57

10.4 ± 0.22*

8.6 ± 0.29*

6.9 ± 0.24**

5.2 ± 0.17***

4.1 ± 0.18***

APE

15.4 ± 0.40

12.3 ± 0.21*

10.2 ± 0.44**

10.2 ± 0.37**

8.3 ± 0.31**

5.4 ± 0.24***

APEA

14.8 ± 0.38

11.3 ± 0.39*

8.4 ± 0.31*

6.6 ± 0.28**

6.2 ± 0.19**

4.8 ± 0.17***

Klebsiella pneumoniae

APDW

15.9 ± 0.33

11.2 ± 0.47*

10.7 ± 0.42*

8.3 ± 0.37**

7.1 ± 0.29**

5.4 ± 0.19***

APM

16.9 ± 0.61

13.9 ± 0.33*

11.4 ± 0.45*

9.1 ± 0.33**

6.9 ± 0.32***

6.2 ± 0.23***

APE

15.6 ± 0.39

12.7 ± 0.41*

10.6 ± 0.39*

7.7 ± 0.32**

5.8 ± 0.27***

5.2 ± 0.22***

APEA

15.2 ± 0.34

13.5 ± 0.62*

12.2 ± 0.53*

9.4 ± 0.32*

8.1 ± 0.29**

6.7 ± 0.28**

Escherichia coli

APDW

15.7 ± 0.41

10.8 ± 0.31*

8.3 ± 0.31*

7.0 ± 0.19**

6.3 ± 0.16**

4.8 ± 0.19***

APM

17.2 ± 0.66

12.9 ± 0.59*

12.1 ± 0.51*

9.5 ± 0.35*

7.1 ± 0.28**

5.4 ± 0.19***

APE

15.9 ± 0.54

12.6 ± 0.29*

11.2 ± 0.49*

8.4 ± 0.28**

6.7 ± 0.24***

6.0 ± 0.21***

APEA

15.5 ± 0.48

11.7 ± 0.31*

10.3 ± 0.34*

9.2 ± 0.19*

7.2 ± 0.21**

5.1 ± 0.22***

Pseudomonas aeruginosa

APDW

16.2 ± 0.46

11.1 ± 0.29*

9.2 ± 0.47*

7.7 ± 0.43**

5.9 ± 0.28***

4.3 ± 0.21***

APM

16.3 ± 0.57

13.6 ± 0.61*

10.1 ± 0.33*

10.4 ± 0.28*

8.4 ± 0.29**

6.9 ± 0.21**

APE

15.4 ± 0.44

12.1 ± 0.29*

11.3 ± 0.41*

8.4 ± 0.44*

6.1 ± 0.32**

4.8 ± 0.19***

APEA

15.9 ± 0.41

11.1 ± 0.22*

9.9 ± 0.33**

7.4 ± 0.39**

7.1 ± 0.27**

5.4 ± 0.19***

  1. Star *–*** represent; *** highly significant, ** slightly significant and * non-significant difference from control at P < 0.05 by one-way ANOVA in the column. Values are mean ± SD of triplicate. Where APDW, APM, APE and APEA stands for Distilled water, Methanol, Ethanol and Ethyl acetate extracts, respectively